https://www.formula1.com/en/latest/headlines/2018/1/formula-1-to-stop-using-grid-girls-.html
I personally would have also been fine with using a mix of grid boys and grid girls, but I think it's a good move to make the sport more open to women.Formula 1 will end the long-standing practice of using walk-on grid girls, commencing with the start of the 2018 FIA Formula 1 World Championship season. These changes also apply to our other motorsports series that take place during the Grands Prix weekends.
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“Over the last year we have looked at a number of areas which we felt needed updating so as to be more in tune with our vision for this great sport," said Sean Bratches, Managing Director, Commercial Operations at Formula 1.
"While the practice of employing grid girls has been a staple of Formula 1 Grands Prix for decades, we feel this custom does not resonate with our brand values and clearly is at odds with modern day societal norms. We don’t believe the practice is appropriate or relevant to Formula 1 and its fans, old and new, across the world.”